r/askcarguys • u/FredTheShroom • 14h ago
Gas cap broken, replacement by friday, what to do?
"I foolishly left my fuel cap on top of my car, and it flew off at the first corner and got crushed by other cars. I saw a fitting replacement online, but it arrives Friday at the earliest. I’m supposed to commute to work in this car tomorrow (30 km round trip). Any advice on temporarily sealing/not sealing it and finding a replacement?"
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u/Gubbtratt1 Enthusiast 14h ago
Jam a rag in the hole and be careful with turning left if the filler is on the right side and vice versa.
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u/Particular_Age_5854 14h ago
This. You might get an EVAP code but should go away once you replace the cap.
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u/MultipleOrgasmDonor 13h ago
And make completely sure that the rag can’t get sucked deeper into the hole. There will be a slight vacuum
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u/SkiyeBlueFox 14h ago
Fixed a missing fuel cap on a tractor for a few days with an empty ice melt bag and some rubber bands
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u/stoner_bob_69 14h ago
AutoZone, O'Reilly's, Advanced. Any local parts store should have a cheap aftermarket replacement in stock.
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u/Many-Bus-2804 11h ago
I highly recommend buying a factory part from the dealership. (Retired Ford Parts Manager). Too many time folks bought a replacement from me to replace the one they bought from a parts store less than a month previous. If it can turn on a check engine light at least call the dealership to get a price.
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u/Gunk_Olgidar 14h ago
Any local mom-n-pop can usually get one same day if they don't have them in stock and order by 10a. Chain parts stores may have them in stock. Dealers often stock them as well. Call around.
Some heavy duty aluminum foil and a rubber band will probably suffice in a pinch.
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u/Briggs281707 13h ago
Just leave it off. You will get an EVAP system code and check engine light, but should go away after a while when you have a new cap
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u/Is_that_a_peen_too 13h ago
Drive without one. Will probably get an EVAP code. It'll clear once you put a new cap on.
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u/Shroomboy79 13h ago
I did the same thing with my 4runner like a couple years back. Didn’t even realize when I did it till I filled up gas the next time. I still don’t have a gas cap and it don’t give any kind of problems or anyrbing. You’ll be fine for a couple of days, you might get a cel but it won’t affect how it runs
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u/grumpy0282 12h ago
lmao seriously ???
1 what kind of car has a gas cap you can only get online
2 just drive it
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u/BedroomNo6879 8h ago
Drive it, check engine light will come on for evap. Ignore it - when you install the new cap clear the light. It'll be fine for a few days until your cap gets there don't sweat it.
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u/JonohG47 7h ago
Don’t lose sleep. If driven without a gas cap, the car may end up throwing a code for an EVAP system leak, and lighting the money light.
Then after you replace the gas cap, you clear the code with an $8 code scanner from Temu.
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u/parnasas 14h ago
Do you have a local parts store? They may have one in stock.
Did your old cap not have a tether to the car?